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Author:

Zhao, Yao-Hua (Zhao, Yao-Hua.) (Scholars:赵耀华) | Zou, Fei-Long (Zou, Fei-Long.) | Diao, Yan-Hua (Diao, Yan-Hua.) | Quan, Zhen-Hua (Quan, Zhen-Hua.)

Indexed by:

CPCI-S

Abstract:

The performance of a new flat plate solar heat collector with perfect combination of high efficiency and low cost is investigated experimentally. The new system described in this study uses a novel micro heat pipe array as a key component for the system. One such flat plate heat collector contains over 300 micro heat pipes per 1m(2) and the hydraulic diameter of the micro heat pipes is 0.4-1.0mm. A detailed heat transfer experimental study is conducted during daylight hours over several months, focusing on the collector efficiency and overall efficiency of the system as well as total heat loss factor. The results show that the collector's maximum instantaneous efficiency is up to 88%. Compared with conventional evacuated glass tube solar water heater, the system offers the additional benefits of high pressure resistance, low weight, good reliability and durability, easy integration into buildings and absence of freezing during winter months. Besides, compared with traditional flat-plate solar water system which is mainly sheet-and-tube concept, the system also shows many advantages: higher efficiency, much cheaper, absence of tube-bonding and freezing etc. Therefore, the system proposes a unique substitute to common solar water heating systems.

Keyword:

Solar energy micro heat pipe heat collector flat plate solar heat collector micro heat pipe array solar water heater

Author Community:

  • [ 1 ] [Zhao, Yao-Hua]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing, Peoples R China
  • [ 2 ] [Zou, Fei-Long]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing, Peoples R China
  • [ 3 ] [Diao, Yan-Hua]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing, Peoples R China
  • [ 4 ] [Quan, Zhen-Hua]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing, Peoples R China

Reprint Author's Address:

  • 赵耀华

    [Zhao, Yao-Hua]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing, Peoples R China

Email:

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Source :

PROCEEDINGS OF THE ASME INTERNATIONAL HEAT TRANSFER CONFERENCE - 2010, VOL 5: FUEL CELLS, GAS TURBINES, HEAT PIPES, JET IMPINGEMENT, RADIATION

Year: 2010

Page: 361-368

Language: English

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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